摘要： Surround the TreesTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 6728Accepted Submission(s): 2556Problem DescriptionThere are a lot of trees in an area. A peasant wants to buy a rope to surround all these trees. So at first he must know the minima 阅读全文